Home / 858,040.20-1,287,060.30-503,746.20

Finding the Fourth Proportional to 858,040.20, 1,287,060.30 and 503,746.20

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Solution

The fourth proportional to 858,040.20, 1,287,060.30 and 503,746.20 is: 755,619.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,040.20 : 1,287,060.30 = 503,746.20 : x
  2. Step 2: Convert to fraction form
    858,040.20/1,287,060.30 = 503,746.20/x
  3. Step 3: Cross multiply
    858,040.20x = 1,287,060.30 × 503,746.20
  4. Step 4: Simplify right side
    858,040.20x = 648,351,735,295.86
  5. Step 5: Solve for x
    x = 648,351,735,295.86/858,040.20
  6. Step 6: Final answer
    x = 755,619.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.